A Output For Instant. Heating Water Heater At Power-Off - Viessmann VITOTRONIC 200 Service Instructions Manual

Parameter group Electric booster heater

790A Output for instant. heating water heater at power-OFF

Value Meaning
"0" Instantaneous heating water heater remains
off during power-OFF, except for frost protec-
tion.
"1" Output stage 1, e.g. approx. 3 kW
"2" Output stage 2, e.g. approx. 6 kW
"3" Output stages 1 and 2 simultaneously, e.g.
approx. 9 kW
790B Dual mode temp instant. heating water heater
Temperature limit for central heating with the instanta-
neous heating water heater.
If the adjusted outside temperature (long-term aver-
age) falls below the dual mode temperature, the heat
pump control unit enables operation of the instantane-
ous heating water heater.
Requirements: The heat pump and/or other heat sour-
ces cannot meet the current heat demand on their
own.
226
!
!
Above the dual mode temperature, the heat pump con-
trol unit only starts the instantaneous heating water
heater under the following conditions:
DHW reheating using instantaneous heating water
■
heater is necessary ("Enable electric heaters for
DHW heating 6015").
■ Heat pump is faulty.
≙
Setting 1 0.1 °C